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Department of Electrical and Computer Engineering

Ko, Dong Kyun

Contact Info
Title: Assistant Professor
Email: dong.k.ko@njit.edu
Office: 215 ecec
Phone: 973-596-3515
Dept: electrical and com. eng
Webpage: http://web.njit.edu/~dkko

About Me

Dr. Dong-Kyun Ko comes from MIT, where he held a joint postdoctoral appointment with Dr. Vladimir Bulovic’s and Dr. Moungi Bawendi’s labs in Electrical Engineering and Chemistry, respectively. He received his PhD in Materials Science and Engineering from University of Pennsylvania, advised by Dr. Christopher Murray. Dong-Kyun´s research focuses on energy materials and devices utilizing colloidal semiconductor nanocrystals (quantum dots). Specifically, he is interested in developing novel solar energy and waste heat harvesting devices by manipulating matter at the nanoscale. His research involves multidisciplinary approaches that span from physics, chemistry, and materials science to electrical engineering. He is the author and co-author of ~ 15 research articles, including Nano Letters, Advanced Materials, and Journal of American Chemical Society. 

Education

-PhD, Materials Science and Engineering, University of Pennsylvania (Advisor: Christopher Murray), 2011
-MS, Materials Science and Engineering, University of Pennsylvania, 2007
-BS, Materials Science and Engineering, Yonsei University (Seoul, Korea), 2005

Professional Expierence

-Postdoc, Electrical Engineering and Chemistry, Massachusetts Institute of Technology (Advisor: Vladimir Bulovic and Moungi Bawendi), 2011-2014
-Visiting Researcher, Molecular Foundry, Lawrence Berkeley National Laboratory, 04~08/2009


Courses I Teach

RENEWABLE ENERGY SYSTEMS

Research Interests

-Colloidal semiconductor nanocrystal (quantum dot) synthesis
-Advanced semiconductor materials design: Multi-component nanocrystal solids, nanocomposites 
-Fabrication and characterization of nanoelectronic devices
-Quantum dot solar cells
-Nanostructured thermoelectrics


Publications

● D. -K. Ko; P. R. Brown; M. G. Bawendi; V. Bulovic, "p-i-n Heterojunction Solar Cells with a Colloidal Quantum-Dot Absorber Layer," Adv. Mater., 26, 4845-4850 (2014).
● J. -H. Choi; A. T. Fafarman; S. J. Oh; D. -K. Ko; D. K. Kim; D. T. Diroll; S. Muramoto; J. G. Gillen; C. B. Murray; C. R. Kagan, "Bandlike Transport in Strongly Coupled and Doped Quantum Dot Solids: A Route to High-Performance Thin-Film Electronics," Nano Lett., 12, 2631-2638 (2012).
● D. -K. Ko; Y. J. Kang; C. B. Murray, "Enhanced Thermopower via Carrier Energy Filtering in Solution-Processable Pt-Sb2Te3 Nanocomposites," Nano Lett., 11, 2841-2844 (2011).
● A. Dong; J. Chen; S. J. Oh; W. -K. Koh; F. Xiu; X. Ye; D. -K. Ko; K. L. Wang; C. R. Kagan; C. B. Murray, "Multiscale Periodic Assembly of Striped Nanocrystal Superlattice Films on a Liquid Surface," Nano Lett., 11, 841-846 (2011).
● Y. -W. Liu; D. -K. Ko; S. J. Oh; T. R. Gordon; V. Doan-Nguyen; T. Paik; Y. Kang; X. Ye; L. Jin; C R. Kagan; C. B. Murray, "Near-Infrared Absorption of Monodisperse Silver Telluride (Ag2Te) Nanocrystals and Photoconductive Response of Their Self-Assembled Superlattices," Chem. Mat., 23, 4657-4659 (2011).
● D. -K. Ko; C. B. Murray, "Probing the Fermi Energy Level and the Density of States Distribution in PbTe Nanocrystal (Quantum Dot) Solids by Temperature-Dependent Thermopower Measurements," ACS Nano, 5, 4810-4817 (2011).
● T. Paik; D. -K. Ko; T. R. Gordon; V. Doan-Nguyen; C. B. Murray, "Studies of Liquid Crystalline Self-Assembly of GdF3 Nanoplates by In-Plane, Out-of-Plane SAXS," ACS Nano, 5, 8322-8330 (2011).
● A. T. Fafarman; W. -K. Koh; B. T. Diroll; D. K. Kim; D. -K. Ko; S. J. Oh; X. Ye; V. Doan-Nguyen; M. R. Crump; D. C. Reifsnyder; C. B. Murray; C. R. Kagan, "Thiocyanate-Capped Nanocrystal Colloids: Vibrational Reporter of Surface Chemistry and Solution-Based Route to Enhanced Coupling in Nanocrystal Solids," J. Am. Chem. Soc., 133, 15753-15761 (2011).
● D. -K. Ko; J. J. Urban; C. B. Murray, "Carrier distribution and dynamics of nanocrystal solids doped with artificial atoms,"Nano Lett., 10, 1842-1847 (2010).
● Y. Jung*; D. -K. Ko*; R. Agarwal, "Synthesis and Structural Characterization of Single-Crystalline Branched Nanowire Heterostructures," Nano Lett., 7, 264-268 (2007). * equally contributed
● Y. Jung; S. -H. Lee; D. -K. Ko; R. Agarwal, "Synthesis and Characterization of Ge2Sb2Te5 Nanowires with Memory Switching Effect," J. Am. Chem. Soc., 128, 14026-14027 (2006).